Question

Which is an example of qualitative trait?

• A. Egg production
• B. Growth rate
• C. Milk yield
• D. Coat colour

Hint:

Qualitative = categorical (color, horn type)
Quantitative = measurable (milk, growth)

Answer 1

The Correct Option is D

Concept:
Traits in animals are classified into two main types: qualitative and quantitative traits. Qualitative traits are controlled by one or a few genes and are not measured numerically, whereas quantitative traits are influenced by many genes and environment and are measurable.

Step 1: Understanding Qualitative Traits

• Controlled by single or few genes
• Show distinct categories (e.g., black or white)
• Not influenced significantly by environment

Step 2: Understanding Quantitative Traits

• Controlled by multiple genes
• Show continuous variation
• Measurable in numbers (e.g., kg, liters)

Step 3: Evaluating Options
Egg production (A)

• Measured in number of eggs
• Continuous variation → Quantitative Growth rate (B)

• Measured over time
• Continuous variation → Quantitative Milk yield (C)

• Measured in liters
• Continuous variation → Quantitative Coat colour (D)

• Discrete trait (black, brown, white)
• Controlled by specific genes → Qualitative Final Conclusion: \[ \boxed{\text{Coat colour}} \]